S-882125AMH-M2ATFZ Datasheet, PDF (1/24 Pages) Seiko Instruments Inc – VOLTAGE REGULATION

S-8821 Series
www.sii-ic.com
VOLTAGE REGULATION
STEP-UP CHARGE PUMP DC-DC CONVERTER
© SII Semiconductor Corporation, 2002-2015
Rev.5.1_01
The S-8821 series is a CMOS step-up charge pump DC-DC converter with a voltage regulation function.
The S-8821 series consists of an oscillation circuit, a controller, a reference voltage circuit, an error amplifier
circuit, and an output switching transistor, and can regulate the output voltage by PFM control.
Since small ceramic capacitors can be used for the pump capacitor, input capacitor, and output capacitor, the
mounting area can be minimized.
 Features
• Step-up PFM control CMOS charge pump
• Power supply voltage:
• Output voltage:
• Output voltage accuracy:
• Built-in soft start circuit:
• Output current
• Oscillation frequency:
• ON/OFF function:
• Lead-free, Sn 100%, halogen-free^*1
1.6 to 5.0 V
2.5 to 5.5 V, selectable in 0.1 V steps.
±2 % max.
1.0 ms typ.
25 mA (VIN=(VOUT(S) × 0.80) V)
1.0 MHz typ.
During standby: 1 μA max.
*1. Refer to “ Product Name Structure” for details.
 Applications
• Lithium ion battery driven applications
• Local power supply
• Power supply for white LED display backlights
 Packages
• SOT-23-6W
• SNT-8A
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